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[PATCH 5/5] xen/arm: mpu: Implement a dummy enable_secondary_cpu_mm (arm32)
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Ayan Kumar Halder <ayan.kumar.halder@xxxxxxx>
- Date: Tue, 4 Feb 2025 19:23:57 +0000
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- Cc: Ayan Kumar Halder <ayan.kumar.halder@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, "Volodymyr Babchuk" <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Tue, 04 Feb 2025 19:24:35 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Secondary cpus initialization is not yet supported. Thus, we print an
appropriate message and put the secondary cpus in WFE state.
Signed-off-by: Ayan Kumar Halder <ayan.kumar.halder@xxxxxxx>
---
xen/arch/arm/arm32/mpu/head.S | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/xen/arch/arm/arm32/mpu/head.S b/xen/arch/arm/arm32/mpu/head.S
index 4aad3c6b5d..49ab5fc9c0 100644
--- a/xen/arch/arm/arm32/mpu/head.S
+++ b/xen/arch/arm/arm32/mpu/head.S
@@ -156,6 +156,16 @@ FUNC(enable_boot_cpu_mm)
ret
END(enable_boot_cpu_mm)
+/*
+ * We don't yet support secondary CPUs bring-up. Implement a dummy helper to
+ * please the common code.
+ */
+ENTRY(enable_secondary_cpu_mm)
+ PRINT("- SMP not enabled yet -\r\n")
+1: wfe
+ b 1b
+ENDPROC(enable_secondary_cpu_mm)
+
/*
* Local variables:
* mode: ASM
--
2.25.1
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